Not, but when the brain's appetite center registers full, people will naturally stop eating. If so, then why do most people tend to overeat? According to Katz, the typical American diet includes too wide a selection of flavors at each meal, confusing the brain, and delaying it's sensors from registering "full." (http://www.bestdietforme.com/DietBooks/FlavorPointDiet.htm) So, maybe we can trick our brain to go into diet mode..
